> ## Documentation Index
> Fetch the complete documentation index at: https://docs.exponent.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# Trade PT

> Low-level instruction to execute an exact-in swap between PT and SY tokens

# createTradePtInstruction

Builds a raw instruction to execute an exact-in swap between PT and SY tokens. The swap direction determines whether PT is being bought (SY in, PT out) or sold (PT in, SY out). An optional price limit provides anti-sandwich protection by reverting if the spot price moves beyond the specified threshold.

## Usage

```typescript theme={null}
import { createTradePtInstruction } from "@exponent-labs/exponent-sdk/client/clmm";
import { PublicKey, SystemProgram } from "@solana/web3.js";

const ix = createTradePtInstruction({
  trader: traderKeypair.publicKey,
  market: marketAddress,
  ticks: ticksAccount,
  tokenSyTrader: traderSyTokenAccount,
  tokenPtTrader: traderPtTokenAccount,
  tokenSyEscrow: marketSyEscrow,
  tokenPtEscrow: marketPtEscrow,
  addressLookupTable: lookupTableAddress,
  tokenProgram: tokenProgramId,
  syProgram: syProgramId,
  tokenFeeTreasurySy: feeTreasurySyAccount,
  tokenFeeTreasuryPt: feeTreasuryPtAccount,
  eventAuthority: eventAuthorityPda,
  program: clmmProgramId,
  amountIn: 1_000_000_000n,
  swapDirection: { buyPt: {} },
  amountOutConstraint: 900_000_000n,
  priceSpotLimit: 1.05,
});
```

## Accounts

| Name                 | Type        | Signer | Writable | Description                   |
| -------------------- | ----------- | ------ | -------- | ----------------------------- |
| `trader`             | `PublicKey` | Yes    | Yes      | Wallet executing the trade    |
| `market`             | `PublicKey` | No     | Yes      | The CLMM market account       |
| `ticks`              | `PublicKey` | No     | Yes      | The market tick array account |
| `tokenSyTrader`      | `PublicKey` | No     | Yes      | Trader's SY token account     |
| `tokenPtTrader`      | `PublicKey` | No     | Yes      | Trader's PT token account     |
| `tokenSyEscrow`      | `PublicKey` | No     | Yes      | Market SY escrow account      |
| `tokenPtEscrow`      | `PublicKey` | No     | Yes      | Market PT escrow account      |
| `addressLookupTable` | `PublicKey` | No     | No       | Market address lookup table   |
| `tokenProgram`       | `PublicKey` | No     | No       | SPL Token program             |
| `syProgram`          | `PublicKey` | No     | No       | SY program                    |
| `tokenFeeTreasurySy` | `PublicKey` | No     | Yes      | SY fee treasury account       |
| `tokenFeeTreasuryPt` | `PublicKey` | No     | Yes      | PT fee treasury account       |
| `eventAuthority`     | `PublicKey` | No     | No       | Event authority PDA           |
| `program`            | `PublicKey` | No     | No       | CLMM program ID               |

## Args

| Name                  | Type             | Description                                |
| --------------------- | ---------------- | ------------------------------------------ |
| `amountIn`            | `u64`            | Exact amount of input tokens               |
| `swapDirection`       | `SwapDirection`  | Direction of the swap: `BuyPt` or `SellPt` |
| `amountOutConstraint` | `u64` (optional) | Minimum amount of output tokens to receive |
| `priceSpotLimit`      | `f64` (optional) | Price limit for anti-sandwich protection   |

## Returns

`TransactionInstruction` — a transaction instruction ready to be added to a transaction.